Global Patent Index - EP 2256892 B1

EP 2256892 B1 20180110 - DRIVING CONTROLLER OF AC MOTOR

Title (en)

DRIVING CONTROLLER OF AC MOTOR

Title (de)

ANTRIEBSREGLER FÜR WECHSELSTROMMOTOR

Title (fr)

CONTRÔLEUR DE COMMANDE D'UN MOTEUR CA

Publication

EP 2256892 B1 20180110 (EN)

Application

EP 08721070 A 20080229

Priority

JP 2008053650 W 20080229

Abstract (en)

[origin: EP2256892A1] An object is to provide a driving controller for an AC motor that can prevent generation of an excessive voltage between lines of a motor and between contacts of a motor cut-off contactor and a continuous arc between contacts of the motor cut-off contactor, regardless of the type of a fault occurred, even when a phase in which a current zero point is not generated and a phase in which a current zero point is generated coexist in a fault current that flows between an inverter and the motor. A control unit 17A is configured to open a motor-side contactor 16 not at a time when a state of a detected current is determined to be abnormal but at a time when the state of the current is determined to be normal, even when a basic contactor-close command MKCO becomes off (L level).

IPC 8 full level

H02H 7/085 (2006.01); B60L 3/00 (2006.01); B60L 9/16 (2006.01); H02H 7/08 (2006.01); H02P 21/22 (2016.01); H02P 23/00 (2016.01); H02P 27/06 (2006.01); H02P 27/08 (2006.01)

CPC (source: EP US)

B60L 3/0023 (2013.01 - EP US); B60L 9/16 (2013.01 - EP US); H02H 7/0838 (2013.01 - EP US); B60L 2210/20 (2013.01 - EP US); Y02T 10/72 (2013.01 - EP US)

Citation (examination)

None

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 2256892 A1 20101201; EP 2256892 A4 20131030; EP 2256892 B1 20180110; BR PI0822265 A2 20150623; CA 2714709 A1 20090903; CN 101953047 A 20110119; CN 101953047 B 20141112; JP 4316005 B1 20090819; JP WO2009107233 A1 20110630; KR 101182881 B1 20120913; KR 20100103725 A 20100927; US 2010289439 A1 20101118; US 8598837 B2 20131203; WO 2009107233 A1 20090903

DOCDB simple family (application)

EP 08721070 A 20080229; BR PI0822265 A 20080229; CA 2714709 A 20080229; CN 200880127542 A 20080229; JP 2008053650 W 20080229; JP 2008535828 A 20080229; KR 20107019032 A 20080229; US 86378008 A 20080229